I drew the edit in a style that made it easier to make changes, so don't take it at face value.
But I really want to stress that you need to reduce the amount of colors you're using though, if there's barely a difference in contrast between them, they're essentially useless and just adds an unnecessary amount of work for you.
If you want to improve the perspective I'd suggest adding something that clearly shows it off, like boxes, a sign that sticks out, maybe an Awning in the right place.
Just make sure you block it out first, with clear shading so the shape is easy to see, before you start adding details and polish.
